TWI643454B - Multilayer LC filter - Google Patents
Multilayer LC filter Download PDFInfo
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- TWI643454B TWI643454B TW106129335A TW106129335A TWI643454B TW I643454 B TWI643454 B TW I643454B TW 106129335 A TW106129335 A TW 106129335A TW 106129335 A TW106129335 A TW 106129335A TW I643454 B TWI643454 B TW I643454B
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- 239000004020 conductor Substances 0.000 claims abstract description 324
- 230000008878 coupling Effects 0.000 claims abstract description 136
- 238000010168 coupling process Methods 0.000 claims abstract description 136
- 238000005859 coupling reaction Methods 0.000 claims abstract description 136
- 239000003990 capacitor Substances 0.000 claims description 109
- 238000004804 winding Methods 0.000 claims description 23
- 239000010410 layer Substances 0.000 description 47
- 239000000919 ceramic Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/09—Filters comprising mutual inductance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0138—Electrical filters or coupling circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
- H01F2017/0026—Multilayer LC-filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/0085—Multilayer, e.g. LTCC, HTCC, green sheets
Abstract
本發明提供一種鄰接之LC共振器之電感器間之磁耦合強度經調整而不會大型化之積層型LC濾波器。於至少1個LC共振器中設置磁耦合調整用電感器，由該磁耦合調整用電感器包含線路狀導體圖案5a與通孔導體2f連接者構成，線路狀導體圖案5a連接於通孔導體2h之中途點X，且通孔導體2f連接於接地導體圖案3，設有磁耦合調整用電感器之LC共振器之環形電感器及磁耦合調整用電感器與鄰接之其他LC共振器之環形電感器磁耦合。 The present invention provides a multilayer LC filter in which the magnetic coupling strength between inductors of adjacent LC resonators is adjusted without being enlarged. An inductor for magnetic coupling adjustment is provided in at least one LC resonator. The inductor for magnetic coupling adjustment includes a line-shaped conductor pattern 5a connected to a via-hole conductor 2f, and the line-shaped conductor pattern 5a is connected to the via-hole conductor 2h. The halfway point X, and the through-hole conductor 2f is connected to the ground conductor pattern 3, a loop inductor provided with an LC resonator for the magnetic coupling adjustment inductor, and a loop inductance for the magnetic coupling adjustment inductor and an adjacent LC resonator. Device is magnetically coupled.
Description
本發明係關於一種於積層體內部具備複數個LC共振器之積層型LC濾波器，更詳細而言，本發明係關於一種鄰接之LC共振器之電感器間之磁耦合強度經調整而不會大型化之積層型LC濾波器。 The present invention relates to a multilayer LC filter having a plurality of LC resonators inside a multilayer body. More specifically, the present invention relates to a magnetic coupling strength between inductors of an adjacent LC resonator that is adjusted without Large-scale multi-layer LC filter.
於由複數個介電質層積層而成之積層體內部形成有包含電感器及電容器之LC共振器之積層型LC濾波器，被用於各種電子機器。 A multilayer LC filter including an LC resonator including an inductor and a capacitor is formed inside a multilayer body formed by stacking a plurality of dielectrics, and is used in various electronic devices.
此種積層型LC濾波器於專利文獻1(日本專利特開2012-23752號公報)中有所揭示。 Such a laminated LC filter is disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2012-23752).
圖6係表示專利文獻1所揭示之積層型LC濾波器(積層帶通濾波器)1100。 FIG. 6 shows a multilayer LC filter (multilayer bandpass filter) 1100 disclosed in Patent Document 1. As shown in FIG.
積層型LC濾波器1100具備由5層陶瓷層101a至101e積層而成之積層體101。 The multilayer LC filter 1100 includes a multilayer body 101 in which five ceramic layers 101 a to 101 e are laminated.
於陶瓷層(接地電極形成層)101a之上側主面，形成有接地導體圖案(接地電極)102。接地導體圖案102具備連接導體圖案102a、102b，該連接導體圖案102a、102b係用於與形成於積層體101側面之接地端子(接地端子，未圖示)相連接。 A ground conductor pattern (ground electrode) 102 is formed on the main surface on the upper side of the ceramic layer (ground electrode formation layer) 101a. The ground conductor pattern 102 includes connection conductor patterns 102 a and 102 b for connecting to a ground terminal (ground terminal, not shown) formed on the side of the laminated body 101.
於陶瓷層(電容器導體圖案形成層)101b之上側主面，形成有4個電容器導體圖案103a至103d。又，於陶瓷層101b中，形成有4個通孔導體(通孔電極)104a至104d。 On the main surface on the upper side of the ceramic layer (capacitor conductor pattern forming layer) 101b, four capacitor conductor patterns 103a to 103d are formed. In the ceramic layer 101b, four via-hole conductors (via-hole electrodes) 104a to 104d are formed.
於陶瓷層(輸入/輸出電極形成層)101c之上側主面，形成有連接導體圖案105a、105b，該連接導體圖案105a、105b係用於連接至形成於積層體101之相向端面之輸入/輸出端子(輸入/輸出電極，未圖示)。又，於陶瓷層101b中，除前述之4個通孔導體104a至104d以外，進而形成有6個通孔導體104e至104j。 On the main surface on the upper side of the ceramic layer (input / output electrode forming layer) 101c, connection conductor patterns 105a and 105b are formed, and the connection conductor patterns 105a and 105b are used to connect to the input / output formed on the opposite end surface of the laminated body 101 Terminal (input / output electrode, not shown). Further, in the ceramic layer 101b, in addition to the aforementioned four via-hole conductors 104a to 104d, six via-hole conductors 104e to 104j are formed.
於陶瓷層(線路狀導體圖案形成層)101d之上側主面，形成有4個線路狀導體圖案(線路電極)106a至106d。又，於陶瓷層101d中，形成有通孔導體104a至104h。 On the main surface of the ceramic layer (line-like conductor pattern forming layer) 101d, four line-like conductor patterns (line electrodes) 106a to 106d are formed. In the ceramic layer 101d, via-hole conductors 104a to 104h are formed.
陶瓷層(外層)101e為保護層，未形成導體圖案、通孔導體。 The ceramic layer (outer layer) 101e is a protective layer, and a conductor pattern and a via-hole conductor are not formed.
於積層體101之內部，形成有第1至第4之4個LC共振器。各LC共振器由環形電感器與電容器並聯連接之構造所構成。 Inside the multilayer body 101, four LC resonators of the first to fourth are formed. Each LC resonator has a structure in which a ring inductor and a capacitor are connected in parallel.
第1 LC共振器具備由通孔導體104e、線路狀導體圖案106a與通孔導體104a連接而成之環形電感器。又，由電容器導體圖案103a與接地導體圖案102構成電容器。並且，如上所述，環形電感器與電容器係並聯連接。 The first LC resonator includes a ring-shaped inductor in which a via-hole conductor 104e, a line-shaped conductor pattern 106a, and a via-hole conductor 104a are connected. A capacitor is formed by the capacitor conductor pattern 103 a and the ground conductor pattern 102. As described above, the toroidal inductor and the capacitor are connected in parallel.
同樣，第2 LC共振器具備並聯連接之環形電感器與電容器，該環形電感器係由通孔導體104f、線路狀導體圖案106b及通孔導體104b連接而成，該電容器由電容器導體圖案103b及接地導體圖案102所構成。第3 LC共振器具備並聯連接之環形電感器與電容器，該環形電感器係由通孔導體104g、線路狀導體圖案106c及通孔導體104c連接而成，該電容器由電容器導體圖案103c及接地導體圖案102所構成。第4 LC共振器具備並聯連接之環形電感器與電容器，該環形電感器係由通孔導體104h、線路狀導體圖案106d及通孔導體104d連接而成，該電容器由電容器導體圖案103d及接地導體圖案102所構成。 Similarly, the second LC resonator includes a ring-shaped inductor and a capacitor connected in parallel. The ring-shaped inductor is connected to the via-hole conductor 104f, the line-shaped conductor pattern 106b, and the via-hole conductor 104b. The capacitor is composed of the capacitor conductor pattern 103b and The ground conductor pattern 102 is configured. The third LC resonator includes a ring inductor and a capacitor connected in parallel. The ring inductor is formed by connecting a via-hole conductor 104g, a line-shaped conductor pattern 106c, and a via-hole conductor 104c, and the capacitor includes a capacitor conductor pattern 103c and a ground conductor The pattern 102 is composed. The fourth LC resonator includes a ring inductor and a capacitor connected in parallel. The ring inductor is connected by a via-hole conductor 104h, a line-shaped conductor pattern 106d, and a via-hole conductor 104d. The capacitor is formed by a capacitor conductor pattern 103d and a ground conductor The pattern 102 is composed.
另外，第1 LC共振器之電容器導體圖案103a經由通孔導體104i及連接導體圖案105a連接於其中一個輸入/輸出端子(未圖示)。同樣，第4 LC共振器之電容器導體圖案103d經由通孔導體104j及連接導體圖案105b連接於另一 個輸入/輸出端子(未圖示)。 The capacitor conductor pattern 103a of the first LC resonator is connected to one of the input / output terminals (not shown) via the via-hole conductor 104i and the connection conductor pattern 105a. Similarly, the capacitor conductor pattern 103d of the fourth LC resonator is connected to another input / output terminal (not shown) via the via-hole conductor 104j and the connection conductor pattern 105b.
於積層型LC濾波器1100中，第1 LC共振器之環形電感器與第2 LC共振器之環形電感器磁耦合，第2 LC共振器之環形電感器與第3 LC共振器之環形電感器磁耦合，第3 LC共振器之環形電感器與第4 LC共振器之環形電感器磁耦合。另外，磁耦合者，並不限於鄰接之LC共振器之環形電感器彼此，相隔之LC共振器之環形電感器彼此亦磁耦合。例如，第1 LC共振器之環形電感器不僅與第2 LC共振器之環形電感器磁耦合，亦與第3 LC共振器之環形電感器或第4 LC共振器之環形電感器磁耦合。但是，距離越遠，磁耦合之強度越小。 In the multilayer LC filter 1100, the ring inductor of the first LC resonator and the ring inductor of the second LC resonator are magnetically coupled, the ring inductor of the second LC resonator, and the ring inductor of the third LC resonator. Magnetic coupling. The ring inductor of the 3rd LC resonator and the ring inductor of the 4th LC resonator are magnetically coupled. In addition, magnetic coupling is not limited to the ring inductors of adjacent LC resonators, and the ring inductors of the spaced LC resonators are also magnetically coupled to each other. For example, the ring inductor of the first LC resonator is magnetically coupled not only to the ring inductor of the second LC resonator, but also to the ring inductor of the third LC resonator or the ring inductor of the fourth LC resonator. However, the longer the distance, the smaller the intensity of the magnetic coupling.
現有技術文獻 Prior art literature
專利文獻 Patent literature
專利文獻1：日本專利特開2012-23752號公報 Patent Document 1: Japanese Patent Laid-Open No. 2012-23752
積層型LC濾波器1100於製品之設計階段，藉由調整鄰接之LC共振器之環形電感器間之磁耦合強度，可呈現所期望之頻率特性。並且，鄰接之LC共振器之環形電感器間之磁耦合強度之調整，可藉由調整2個環形電感器之間之距離而進行。例如，於欲增大2個環形電感器間之磁耦合強度之情形時，只要減小2個環形電感器間之距離即可。相反地，於欲減小2個環形電感器間之磁耦合強度之情形時，只要增大2個環形電感器間之距離即可。 The multilayer LC filter 1100 can exhibit desired frequency characteristics by adjusting the magnetic coupling strength between the ring inductors of adjacent LC resonators at the design stage of the product. In addition, the adjustment of the magnetic coupling strength between the ring inductors of adjacent LC resonators can be performed by adjusting the distance between the two ring inductors. For example, when the magnetic coupling strength between two toroidal inductors is to be increased, the distance between the two toroidal inductors may be reduced. Conversely, when it is desired to reduce the magnetic coupling strength between two toroidal inductors, it is only necessary to increase the distance between the two toroidal inductors.
然而，調整2個環形電感器之間之距離以調整2個環形電感器間之磁耦合強度之方法，存在積層體101會大型化之問題。尤其，於欲減小2個環形電感器間之磁耦合強度之情形時，必須增大2個環形電感器間之距離，因而存在積層體101大型化之問題。又，該方法必須使積層體101之大小具備餘裕，以便 可改變(調整)LC共振器之環形電感器之形成位置，因而存在積層體101大型化之問題。 However, the method of adjusting the distance between the two toroidal inductors to adjust the magnetic coupling strength between the two toroidal inductors has a problem that the multilayer body 101 becomes large. In particular, when it is desired to reduce the magnetic coupling strength between two toroidal inductors, it is necessary to increase the distance between the two toroidal inductors. Therefore, there is a problem that the multilayer body 101 becomes large. In addition, in this method, the size of the multilayer body 101 needs to be provided with a margin so that the formation position of the ring inductor of the LC resonator can be changed (adjusted), so there is a problem that the multilayer body 101 becomes large.
本發明係為解決上述習知問題而完成，作為其手段，本發明之積層型LC濾波器具備：長方體狀之積層體，其由複數個介電質層積層而成；複數個線路狀導體圖案，其等形成於介電質層之層間；複數個電容器導體圖案，其等形成於介電質層之層間；至少1個接地導體圖案，其形成於介電質層之層間；以及複數個通孔導體，其等係貫穿介電質層而形成，於積層體之內部，形成有由電感器與電容器並聯連接而成之複數個LC共振器，鄰接之LC共振器之電感器彼此磁耦合，LC共振器之電感器具備環形電感器，該環形電感器由線路狀導體圖案、及連接於該線路狀導體圖案兩端之1對通孔導體所構成，該環形電感器之其中一個通孔導體連接於電容器導體圖案，該環形電感器之另一個通孔導體連接於接地導體圖案，LC共振器之電容器由電容器導體圖案與接地導體圖案之間之電容所構成，於複數個LC共振器中之至少1個LC共振器中，設有磁耦合調整用電感器，設有磁耦合調整用電感器之LC共振器中，磁耦合調整用電感器之一端連接於環形電感器之中途點，且磁耦合調整用電感器之另一端連接於接地導體圖案，設有磁耦合調整用電感器之LC共振器之環形電感器及磁耦合調整用電感器與鄰接之其他LC共振器之環形電感器磁耦合。 The present invention is completed to solve the above-mentioned conventional problems. As a means thereof, the multilayer LC filter of the present invention includes a rectangular parallelepiped multilayer body formed by stacking a plurality of dielectrics, and a plurality of line-shaped conductor patterns. Are formed between the dielectric layers; a plurality of capacitor conductor patterns are formed between the dielectric layers; at least one ground conductor pattern is formed between the dielectric layers; and a plurality of vias Hole conductors are formed through the dielectric layer. Inside the multilayer body, a plurality of LC resonators formed by connecting an inductor and a capacitor in parallel are formed. The inductors of adjacent LC resonators are magnetically coupled to each other. The inductor of the LC resonator includes a toroidal inductor, which is composed of a line-shaped conductor pattern and a pair of through-hole conductors connected to both ends of the line-shaped conductor pattern. One of the through-hole conductors of the toroidal inductor Connected to the capacitor conductor pattern. The other via-hole conductor of the toroidal inductor is connected to the ground conductor pattern. The capacitor of the LC resonator is between the capacitor conductor pattern and the ground conductor pattern. The capacitor is composed of at least one LC resonator among a plurality of LC resonators. An inductor for magnetic coupling adjustment is provided. In an LC resonator provided with an inductor for magnetic coupling adjustment, the One end is connected to the midpoint of the ring inductor, and the other end of the magnetic coupling adjustment inductor is connected to the ground conductor pattern. The ring inductor provided with the LC resonator of the magnetic coupling adjustment inductor, and the magnetic coupling adjustment inductor and The ring inductors of adjacent LC resonators are magnetically coupled.
較佳為，磁耦合調整用電感器包含由線路狀導體圖案與通孔導體連接而成者，設有磁耦合調整用電感器之LC共振器中，磁耦合調整用電感器之線路狀導體圖案連接於環形電感器之與接地導體圖案連接側之通孔導體之中途點，且磁耦合調整用電感器之通孔導體連接於接地導體圖案。於此情形時，設有磁耦合調整用電感器之LC共振器之環形電感器之捲繞方向、與磁耦合調整用電感器之捲繞方向可設為逆向，因此設有磁耦合調整用電感器之LC共振器之電 感器(環形電感器及磁耦合調整用電感器)、與鄰接之其他LC共振器之電感器(環形電感器)之磁耦合強度之調整變得容易進行。 Preferably, the magnetic coupling adjustment inductor includes a line-shaped conductor pattern in which the line-shaped conductor pattern and the through-hole conductor are connected. In the LC resonator provided with the magnetic coupling adjustment inductor, the line-shaped conductor pattern of the magnetic coupling adjustment inductor The via-hole conductor connected to the ring-shaped inductor on the side connected to the ground conductor pattern, and the via-hole conductor of the magnetic coupling adjustment inductor is connected to the ground conductor pattern. In this case, the winding direction of the loop inductor of the LC resonator provided with the magnetic coupling adjustment inductor and the winding direction of the magnetic coupling adjustment inductor can be set in the reverse direction. Therefore, a magnetic coupling adjustment inductor is provided. It is easy to adjust the magnetic coupling strength of inductors (ring inductors and inductors for magnetic coupling adjustment) of LC resonators and inductors (ring inductors) of adjacent LC resonators.
可設為：設有磁耦合調整用電感器之LC共振器之環形電感器之捲繞方向、與鄰接之其他LC共振器之環形電感器之捲繞方向為相同，設有磁耦合調整用電感器之LC共振器之磁耦合調整用電感器之通孔導體，係設於鄰接之其他LC共振器之環形電感器之與電容器導體圖案連接側之通孔導體附近。於此情形時，設有磁耦合調整用電感器之LC共振器之環形電感器之捲繞方向、與鄰接之其他LC共振器之環形電感器之捲繞方向為相同，因此設有磁耦合調整用電感器之LC共振器之環形電感器與鄰接之其他LC共振器之環形電感器之磁耦合強度大。然而，於設有磁耦合調整用電感器之LC共振器之磁耦合調整用電感器中流動之電流之方向、與於鄰接之其他LC共振器之環形電感器中流動之電流之方向變得相反，因此，藉由設有磁耦合調整用電感器，綜合所見之、設有磁耦合調整用電感器之LC共振器之電感器(環形電感器及磁耦合調整用電感器)與鄰接之其他LC共振器之電感器(環形電感器)之磁耦合係被調整為減弱(減小)強度。 It can be set that the winding direction of the loop inductor of the LC resonator provided with the inductor for magnetic coupling adjustment is the same as the winding direction of the ring inductor of the adjacent LC resonator, and the inductance for the magnetic coupling adjustment is provided. The through-hole conductor of the inductor for the magnetic coupling adjustment of the LC resonator of the device is located near the through-hole conductor on the side of the ring inductor of the other LC resonator adjacent to the capacitor conductor pattern. In this case, the winding direction of the ring inductor of the LC resonator provided with the inductor for magnetic coupling adjustment is the same as the winding direction of the ring inductor of the adjacent LC resonator, so a magnetic coupling adjustment is provided. The magnetic coupling strength between the ring inductor of the LC resonator using the inductor and the ring inductor of the adjacent LC resonator is large. However, the direction of the current flowing in the magnetic coupling adjustment inductor of the LC resonator provided with the magnetic coupling adjustment inductor is opposite to the direction of the current flowing in the ring inductor of the adjacent LC resonator. Therefore, by providing an inductor for magnetic coupling adjustment, the inductors (ring inductor and inductor for magnetic coupling adjustment) of the LC resonator provided with the inductor for magnetic coupling adjustment are integrated with the adjacent LC The magnetic coupling system of the inductor (ring inductor) of the resonator is adjusted to reduce (reduce) the strength.
或者，可設為：設有磁耦合調整用電感器之LC共振器之環形電感器之捲繞方向、與鄰接之其他LC共振器之環形電感器之捲繞方向為相反，設有磁耦合調整用電感器之LC共振器之磁耦合調整用電感器之通孔導體，係設於鄰接之其他LC共振器之環形電感器之與接地導體圖案連接側之通孔導體附近。於此情形時，設有磁耦合調整用電感器之LC共振器之環形電感器之捲繞方向、與鄰接之其他LC共振器之環形電感器之捲繞方向為相反，因此設有磁耦合調整用電感器之LC共振器之環形電感器與鄰接之其他LC共振器之環形電感器之磁耦合強度小。然而，於設有磁耦合調整用電感器之LC共振器之磁耦合調整用電感器中流動之電流之方向、與於鄰接之其他LC共振器之環形電感器中流動之電 流之方向變得相同，因此，藉由設有磁耦合調整用電感器，綜合所見之、設有磁耦合調整用電感器之LC共振器之電感器(環形電感器及磁耦合調整用電感器)與鄰接之其他LC共振器之電感器(環形電感器)之磁耦合係被調整為增強(增大)強度。 Alternatively, it can be set that the winding direction of the ring inductor of the LC resonator provided with the magnetic coupling adjustment inductor is opposite to the winding direction of the ring inductor of the adjacent LC resonator, and the magnetic coupling adjustment is provided. The through-hole conductor of the inductor for the magnetic coupling adjustment of the LC resonator using the inductor is provided near the through-hole conductor on the side of the ring inductor adjacent to the other LC resonator, which is connected to the ground conductor pattern. In this case, the winding direction of the loop inductor of the LC resonator provided with the magnetic coupling adjustment inductor is opposite to the winding direction of the ring inductor of the adjacent LC resonator, so a magnetic coupling adjustment is provided. The magnetic coupling strength between the ring inductor of the LC resonator using the inductor and the ring inductor of the adjacent LC resonator is small. However, the direction of the current flowing in the magnetic coupling adjustment inductor of the LC resonator provided with the magnetic coupling adjustment inductor is the same as the direction of the current flowing in the ring inductor of the adjacent LC resonator. Therefore, by providing an inductor for magnetic coupling adjustment, the inductors (ring inductor and inductor for magnetic coupling adjustment) of the LC resonator provided with the inductor for magnetic coupling adjustment are integrated with the adjacent LC The magnetic coupling system of the inductor (ring inductor) of the resonator is adjusted to increase (increase) the strength.
本發明之積層型LC濾波器係於複數個LC共振器中之至少1個LC共振器中設有磁耦合調整用電感器，因此，藉由該磁耦合調整用電感器，可對綜合所見之、設有磁耦合調整用電感器之LC共振器之電感器(環形電感器及磁耦合調整用電感器)與鄰接之其他LC共振器之電感器(環形電感器)之磁耦合強度進行調整，而不會增大積層體之大小。因此，本發明之積層型LC濾波器可獲得所期望之頻率特性，而不會增大積層體之大小。 The multilayer LC filter of the present invention is provided with at least one LC resonator among a plurality of LC resonators, and an inductor for magnetic coupling adjustment is provided. Therefore, the inductor for magnetic coupling adjustment can be used for comprehensive observation. 2. Adjust the magnetic coupling strength between the inductor (ring inductor and inductor for magnetic coupling adjustment) of the LC resonator with the inductor for magnetic coupling adjustment and the inductor (ring inductor) of another LC resonator adjacent to it, It does not increase the size of the laminate. Therefore, the laminated LC filter of the present invention can obtain a desired frequency characteristic without increasing the size of the laminated body.
1‧‧‧積層體 1‧‧‧ laminated body
1a~1o‧‧‧介電質層 1a ~ 1o‧‧‧Dielectric layer
2a~2q、12i~12k、12n~12p‧‧‧通孔導體 2a ~ 2q, 12i ~ 12k, 12n ~ 12p‧‧‧through hole conductor
3‧‧‧接地導體圖案 3‧‧‧ ground conductor pattern
4a~4i‧‧‧電容器導體圖案 4a ~ 4i‧‧‧Capacitor conductor pattern
5a~5g‧‧‧線路狀導體圖案 5a ~ 5g‧‧‧line conductor pattern
C1~C5、C12、C15、C45‧‧‧電容器 C1 ~ C5, C12, C15, C45‧‧‧ capacitors
G‧‧‧接地端子 G‧‧‧ ground terminal
L1~L5‧‧‧電感器(環形電感器) L1 ~ L5‧‧‧ Inductor (Ring Inductor)
LC1~LC5‧‧‧LC共振器 LC1 ~ LC5‧‧‧LC resonator
LX1、LX5‧‧‧磁耦合調整用電感器 LX1, LX5‧‧‧‧Inductors for magnetic coupling adjustment
T1、T2‧‧‧輸入/輸出端子 T1, T2‧‧‧ input / output terminals
圖1係表示第1實施形態之積層型LC濾波器100之立體圖。 FIG. 1 is a perspective view showing a multilayer LC filter 100 according to the first embodiment.
圖2係表示積層型LC濾波器100之分解立體圖。 FIG. 2 is an exploded perspective view showing a multilayer LC filter 100.
圖3係積層型LC濾波器100之等效電路圖。 FIG. 3 is an equivalent circuit diagram of the multilayer LC filter 100.
圖4係表示積層型LC濾波器100之頻率特性、與比較例之積層型LC濾波器之頻率特性之圖表。 FIG. 4 is a graph showing the frequency characteristics of the multilayer LC filter 100 and the frequency characteristics of the multilayer LC filter of the comparative example.
圖5係表示第2實施形態之積層型LC濾波器200之分解立體圖。 FIG. 5 is an exploded perspective view showing a multilayer LC filter 200 according to the second embodiment.
圖6係表示專利文獻1所揭示之積層型LC濾波器1100之分解立體圖。 FIG. 6 is an exploded perspective view showing a multilayer LC filter 1100 disclosed in Patent Document 1. FIG.
以下，結合圖式，說明用於實施本發明之形態。 Hereinafter, embodiments for implementing the present invention will be described with reference to the drawings.
另外，各實施形態係例示地表示本發明之實施形態者，本發明並 不限定於實施形態之內容。又，亦可將不同實施形態中記載之內容加以組合實施，此情形時之實施內容亦包含於本發明中。又，圖式係用於幫助理解實施形態者，有時未必嚴格地描繪。例如，所描繪之構成要素或構成要素間之尺寸比率有時與說明書中所記載之該等之尺寸比率並不一致。又，說明書中所記載之構成要素有時會於圖式中予以省略或者省略個數而描繪。 In addition, each embodiment is an example showing the embodiment of the present invention, and the present invention is not limited to the content of the embodiment. In addition, the contents described in different embodiments may be combined and implemented, and the implementation contents in this case are also included in the present invention. In addition, the scheme is not necessarily strictly drawn for those who help to understand the embodiment. For example, the dimensional ratios of the depicted components or components may not be consistent with those described in the specification. In addition, the constituent elements described in the specification may be omitted in the drawings or the number thereof may be drawn.
[第1實施形態] [First Embodiment]
圖1至圖3係表示第1實施形態之積層型LC濾波器100。其中，圖1為立體圖，圖2為分解立體圖，圖3為等效電路圖。 1 to 3 show a multilayer LC filter 100 according to the first embodiment. Among them, FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, and FIG. 3 is an equivalent circuit diagram.
積層型LC濾波器100具備積層體1。 The multilayer LC filter 100 includes a multilayer body 1.
於積層體1之相向之端面，形成有1對輸入/輸出端子T1、T2。輸入/輸出端子T1、T2各自之一端延伸至積層體1之下側主面，另一端延伸至積層體1之上側主面。又，於積層體1之下側主面，形成有接地端子G。 A pair of input / output terminals T1 and T2 are formed on opposite end surfaces of the laminated body 1. One end of each of the input / output terminals T1 and T2 extends to the main surface on the lower side of the laminated body 1, and the other end extends to the main surface on the upper side of the laminated body 1. Further, a ground terminal G is formed on the lower main surface of the laminated body 1.
積層體1如圖2所示，例如包含由含有陶瓷之15層介電質層1a至1o自下起依序積層而成者。 As shown in FIG. 2, the laminated body 1 includes, for example, those in which 15 dielectric layers 1 a to 1 o including ceramics are sequentially laminated from the bottom.
以下，首先對構成積層體1之各介電質層1a至o進行說明。 Hereinafter, each of the dielectric layers 1 a to o constituting the laminated body 1 will be described.
於介電質層1a之相向之端面，形成有輸入/輸出端子T1、T2。另外，於以下說明之介電質層1b至1o中，亦於相向之端面形成有輸入/輸出端子T1、T2，但於無特別需要之情形時，有時省略其說明及對圖式之符號標註。 Input / output terminals T1 and T2 are formed on opposite end surfaces of the dielectric layer 1a. In addition, in the dielectric layers 1b to 1o described below, input / output terminals T1 and T2 are also formed on the opposite end faces, but when there is no special need, the description and the symbols of the drawings are sometimes omitted Callout.
於介電質層1a之下側主面，形成有接地端子G。 A ground terminal G is formed on the main surface below the dielectric layer 1a.
貫穿介電質層1a之上下主面間，而形成有5個通孔導體2a至2e。 There are five through-hole conductors 2a to 2e formed through the dielectric layer 1a between the upper and lower main surfaces.
於介電質層1a之上側主面，形成有接地導體圖案3。接地導體圖案3藉由通孔導體2a至2e而連接於接地端子G。 A ground conductor pattern 3 is formed on the main surface on the upper side of the dielectric layer 1a. The ground conductor pattern 3 is connected to the ground terminal G through the via-hole conductors 2a to 2e.
貫穿介電質層1b之上下主面間，而形成有7條通孔導體2f至2l。另外，於作為分解立體圖的圖2中，係使通孔導體2f至2l分別較實際朝下方向伸 展地描繪(以下說明的通孔導體中相同)，以便理解連接關係。通孔導體2f至2l分別連接於接地導體圖案3。 Between the upper and lower main surfaces of the dielectric layer 1b, seven through-hole conductors 2f to 2l are formed. In addition, in FIG. 2 as an exploded perspective view, the via-hole conductors 2f to 2l are drawn so as to extend downward from the actual direction (the same applies to the via-hole conductor described below) in order to understand the connection relationship. The via-hole conductors 2f to 2l are connected to the ground conductor pattern 3, respectively.
於介電質層1b之上側主面，形成有5個電容器導體圖案4a至4e。電容器導體圖案4a連接於輸入/輸出端子T1。又，電容器導體圖案4e連接於輸入/輸出端子T2。 On the main surface on the upper side of the dielectric layer 1b, five capacitor conductor patterns 4a to 4e are formed. The capacitor conductor pattern 4a is connected to the input / output terminal T1. The capacitor conductor pattern 4e is connected to the input / output terminal T2.
貫穿介電質層1c之上下主面間，而形成有7條通孔導體2f至2l。另外，通孔導體2f至2l亦如上所述般形成於介電質層1b中，但形成於不同介電質層中之相同符號之通孔導體係指兩者相連接之含義。又，貫穿介電質層1c之上下主面間，而形成有另外之5條通孔導體2m至2q。通孔導體2m連接於電容器導體圖案4a。通孔導體2n連接於電容器導體圖案4b。通孔導體2o連接於電容器導體圖案4c。通孔導體2p連接於電容器導體圖案4d。通孔導體2q連接於電容器導體圖案4e。 Between the upper and lower main surfaces of the dielectric layer 1c, seven through-hole conductors 2f to 2l are formed. In addition, the via-hole conductors 2f to 2l are also formed in the dielectric layer 1b as described above, but the via-conducting system of the same symbol formed in different dielectric layers means that the two are connected. In addition, five other through-hole conductors 2m to 2q are formed through the dielectric layer 1c between the upper and lower main surfaces. The via-hole conductor 2m is connected to the capacitor conductor pattern 4a. The via-hole conductor 2n is connected to the capacitor conductor pattern 4b. The via-hole conductor 2o is connected to the capacitor conductor pattern 4c. The via-hole conductor 2p is connected to the capacitor conductor pattern 4d. The via-hole conductor 2q is connected to the capacitor conductor pattern 4e.
於介電質層1c之上側主面，形成有2個電容器導體圖案4f、4g。電容器導體圖案4f連接於通孔導體2m。又，電容器導體圖案4g連接於通孔導體2q。 On the main surface on the upper side of the dielectric layer 1c, two capacitor conductor patterns 4f and 4g are formed. The capacitor conductor pattern 4f is connected to the via-hole conductor 2m. The capacitor conductor pattern 4g is connected to the via-hole conductor 2q.
貫穿介電質層1d之上下主面間，而形成有12條通孔導體2f至2q。 Twelve through-hole conductors 2f to 2q are formed penetrating between the upper and lower main surfaces of the dielectric layer 1d.
於介電質層1d之上側主面，形成有2個電容器導體圖案4h、4i。電容器導體圖案4h與電容器導體圖案4i彼此連接。 On the main surface on the upper side of the dielectric layer 1d, two capacitor conductor patterns 4h and 4i are formed. The capacitor conductor pattern 4h and the capacitor conductor pattern 4i are connected to each other.
於4層介電質層1e至1h中，分別貫穿上下主面間而形成有12條通孔導體2f至2q。 In the four dielectric layers 1e to 1h, twelve through-hole conductors 2f to 2q are formed to penetrate between the upper and lower main surfaces, respectively.
貫穿介電質層1i之上下主面間，而形成有12條通孔導體2f至2q。 Twelve through-hole conductors 2f to 2q are formed through the upper and lower main surfaces of the dielectric layer 1i.
於介電質層1i之上側主面，形成有2個線路狀導體圖案5a、5b。線路狀導體圖案5a之一端連接於通孔導體2h之中途點X，另一端連接於通孔導體2f。又，線路狀導體圖案5b之一端連接於通孔導體2l之中途點Y，另一端連接於 通孔導體2g。 On the main surface on the upper side of the dielectric layer 1i, two line-like conductor patterns 5a and 5b are formed. One end of the line-shaped conductor pattern 5a is connected to the midway point X of the via-hole conductor 2h, and the other end is connected to the via-hole conductor 2f. One end of the line-shaped conductor pattern 5b is connected to the halfway point Y of the through-hole conductor 21, and the other end is connected to the through-hole conductor 2g.
於4層介電質層1j至1m中，分別貫穿上下主面間而形成有10條通孔導體2h至2q。 In the four dielectric layers 1j to 1m, ten through-hole conductors 2h to 2q are formed to penetrate between the upper and lower main surfaces, respectively.
貫穿介電質層1n之上下主面間，而形成有10條通孔導體2h至2q。 Ten dielectric vias 2h to 2q are formed through the dielectric layers 1n.
於介電質層1n之上側主面，5個線路狀導體圖案5c至5g彼此分別隔開既定之間隔而平行地形成。線路狀導體圖案5c之一端連接於通孔導體2h，另一端連接於通孔導體2m。線路狀導體圖案5d之一端連接於通孔導體2i，另一端連接於通孔導體2n。線路狀導體圖案5e之一端連接於通孔導體2j，另一端連接於通孔導體2o。線路狀導體圖案5f之一端連接於通孔導體2k，另一端連接於通孔導體2p。線路狀導體圖案5g之一端連接於通孔導體2l，另一端連接於通孔導體2q。 On the main surface on the upper side of the dielectric layer 1n, five line-like conductor patterns 5c to 5g are formed in parallel with each other at predetermined intervals. One end of the line-shaped conductor pattern 5c is connected to the via-hole conductor 2h, and the other end is connected to the via-hole conductor 2m. One end of the line-shaped conductor pattern 5d is connected to the via-hole conductor 2i, and the other end is connected to the via-hole conductor 2n. One end of the line-shaped conductor pattern 5e is connected to the via-hole conductor 2j, and the other end is connected to the via-hole conductor 2o. One end of the line-shaped conductor pattern 5f is connected to the via-hole conductor 2k, and the other end is connected to the via-hole conductor 2p. One end of the line-shaped conductor pattern 5g is connected to the via-hole conductor 2l, and the other end is connected to the via-hole conductor 2q.
介電質層1o為保護層。於介電質層1o之相向之端面，形成有輸入/輸出端子T1、T2。 The dielectric layer 1o is a protective layer. Input / output terminals T1 and T2 are formed on opposite end surfaces of the dielectric layer 1o.
包含以上構成之積層型LC濾波器100，可使用習知以來廣泛使用於積層型LC濾波器之材料及製造方法來製造。 The multilayer LC filter 100 including the above configuration can be manufactured using materials and manufacturing methods that have been widely used in multilayer LC filters since they are conventionally used.
積層型LC濾波器100具備圖3所示之等效電路。 The multilayer LC filter 100 includes an equivalent circuit shown in FIG. 3.
積層型LC濾波器100具備輸入/輸出端子T1與輸入/輸出端子T2。 The multilayer LC filter 100 includes an input / output terminal T1 and an input / output terminal T2.
積層型LC濾波器100於輸入/輸出端子T1與輸入/輸出端子T2之間，依序配置有第1至第5之5個LC共振器LC1至LC5。輸入/輸出端子T1連接於第1 LC共振器LC1。輸入/輸出端子T2連接於第5 LC共振器LC5。 The multilayer LC filter 100 is provided between the input / output terminal T1 and the input / output terminal T2 in order. The first to fifth fifth LC resonators LC1 to LC5 are arranged in this order. The input / output terminal T1 is connected to the first LC resonator LC1. The input / output terminal T2 is connected to the fifth LC resonator LC5.
第1 LC共振器LC1包含由電感器L1與電容器C1並聯連接而成者。同樣，第2 LC共振器LC2包含由電感器L2與電容器C2並聯連接而成者，第3 LC共振器LC3包含由電感器L3與電容器C3並聯連接而成者，第4 LC共振器LC4包含由電感器L4與電容器C4並聯連接而成者，第5 LC共振器LC5包含由電感器L5與電容器C5並聯連接而成者。 The first LC resonator LC1 includes an inductor L1 and a capacitor C1 connected in parallel. Similarly, the second LC resonator LC2 includes the inductor L2 and the capacitor C2 connected in parallel, the third LC resonator LC3 includes the inductor L3 and the capacitor C3 connected in parallel, and the fourth LC resonator LC4 includes the The inductor L4 and the capacitor C4 are connected in parallel, and the fifth LC resonator LC5 includes the inductor L5 and the capacitor C5 connected in parallel.
於第1 LC共振器LC1中，設有與電感器L1部分地並聯連接之磁耦合調整用電感器LX1。即，於電感器L1之中途點與接地之間，連接有磁耦合調整用電感器LX1。 The first LC resonator LC1 is provided with a magnetic coupling adjustment inductor LX1 partially connected in parallel with the inductor L1. That is, between the intermediate point of the inductor L1 and the ground, an inductor LX1 for magnetic coupling adjustment is connected.
又，於第5 LC共振器LC5中，設有與電感器L5部分地並聯連接之磁耦合調整用電感器LX5。即，於電感器L5之中途點與接地之間，連接有磁耦合調整用電感器LX5。 The fifth LC resonator LC5 is provided with a magnetic coupling adjustment inductor LX5 that is partially connected in parallel with the inductor L5. That is, a magnetic coupling adjustment inductor LX5 is connected between the intermediate point of the inductor L5 and the ground.
並且，第1 LC共振器LC1之電感器L1及磁耦合調整用電感器LX1、與第2 LC共振器LC2之電感器L2磁耦合。又，第2 LC共振器LC2之電感器L2與第3 LC共振器LC3之電感器L3磁耦合。又，第3 LC共振器LC3之電感器L3與第4 LC共振器LC4之電感器L4磁耦合。又，第4 LC共振器LC4之電感器L4與第5 LC共振器LC5之電感器L5及磁耦合調整用電感器LX5磁耦合。 The inductor L1 and the magnetic coupling adjustment inductor LX1 of the first LC resonator LC1 are magnetically coupled to the inductor L2 of the second LC resonator LC2. The inductor L2 of the second LC resonator LC2 and the inductor L3 of the third LC resonator LC3 are magnetically coupled. The inductor L3 of the third LC resonator LC3 and the inductor L4 of the fourth LC resonator LC4 are magnetically coupled. The inductor L4 of the fourth LC resonator LC4 is magnetically coupled to the inductor L5 and the magnetic coupling adjustment inductor LX5 of the fifth LC resonator LC5.
又，第1 LC共振器LC1與第2 LC共振器LC2藉由電容器C12而電容耦合。又，第4 LC共振器LC4與第5 LC共振器LC5藉由電容器C45而電容耦合。又，第1 LC共振器LC1與第5 LC共振器LC5藉由電容器C15而電容耦合。 The first LC resonator LC1 and the second LC resonator LC2 are capacitively coupled by a capacitor C12. The fourth LC resonator LC4 and the fifth LC resonator LC5 are capacitively coupled by a capacitor C45. The first LC resonator LC1 and the fifth LC resonator LC5 are capacitively coupled by a capacitor C15.
包含以上等效電路之積層型LC濾波器100藉由形成於輸入/輸出端子T1與輸入/輸出端子T2之間之5個LC共振器，構成具備所期望之頻率特性之5級帶通濾波器。 The multilayer LC filter 100 including the above equivalent circuit has five LC resonators formed between the input / output terminal T1 and the input / output terminal T2 to form a five-stage bandpass filter having desired frequency characteristics. .
繼而，對積層型LC濾波器100之等效電路與構成之關係進行說明。 Next, the relationship between the equivalent circuit and the configuration of the multilayer LC filter 100 will be described.
首先，第1 LC共振器LC1之電感器L1由與通孔導體2m、線路狀導體圖案5c、通孔導體2h連接而成之環形電感器所構成。另外，通孔導體2m連接於電容器導體圖案4a，通孔導體2h連接於接地導體圖案3。又，第1 LC共振器LC1之電容器C1由電容器導體圖案4a與接地導體圖案3之間之電容所構成。另外，電容器導體圖案4a如上所述，連接於輸入/輸出端子T1。 First, the inductor L1 of the first LC resonator LC1 is composed of a ring-shaped inductor connected to the via-hole conductor 2m, the line-shaped conductor pattern 5c, and the via-hole conductor 2h. The via-hole conductor 2m is connected to the capacitor conductor pattern 4a, and the via-hole conductor 2h is connected to the ground conductor pattern 3. The capacitor C1 of the first LC resonator LC1 is composed of a capacitor between the capacitor conductor pattern 4 a and the ground conductor pattern 3. In addition, the capacitor conductor pattern 4a is connected to the input / output terminal T1 as described above.
又，第1 LC共振器LC1之磁耦合調整用電感器LX1由串聯連接之線路狀導體圖案5a與通孔導體2f所構成。另外，磁耦合調整用電感器LX1之線路狀導體圖案5a連接於通孔導體2h之中途點X，通孔導體2f連接於接地導體圖案3。 The magnetic coupling adjustment inductor LX1 of the first LC resonator LC1 includes a line-shaped conductor pattern 5a and a via-hole conductor 2f connected in series. In addition, the line-shaped conductor pattern 5a of the magnetic coupling adjustment inductor LX1 is connected to the midpoint X of the via-hole conductor 2h, and the via-hole conductor 2f is connected to the ground conductor pattern 3.
第1 LC共振器LC1之磁耦合調整用電感器LX1之通孔導體2f係設於後述之第2 LC共振器LC2之電感器L2之通孔導體2n附近。其結果，磁耦合調整用電感器LX1之線路狀導體圖案5a與第2 LC共振器LC2之電感器L2之線路狀導體圖案5d係彼此平行地配置。但是，線路狀導體圖案5a與線路狀導體圖案5d無須嚴格地平行配置，亦可以稍許傾斜之狀態而配置。並且，藉由調整線路狀導體圖案5a與線路狀導體圖案5d所成之角度，亦可調整兩者之磁耦合強度。 The through-hole conductor 2f of the magnetic coupling adjustment inductor LX1 of the first LC resonator LC1 is provided near the through-hole conductor 2n of the inductor L2 of the second LC resonator LC2 described later. As a result, the line-shaped conductor pattern 5a of the magnetic coupling adjustment inductor LX1 and the line-shaped conductor pattern 5d of the inductor L2 of the second LC resonator LC2 are arranged in parallel with each other. However, the line-shaped conductor pattern 5 a and the line-shaped conductor pattern 5 d need not be arranged strictly in parallel, and may be arranged in a slightly inclined state. In addition, by adjusting the angle formed by the line-shaped conductor pattern 5a and the line-shaped conductor pattern 5d, the magnetic coupling strength of the two can also be adjusted.
第2 LC共振器LC2之電感器L2由與通孔導體2n、線路狀導體圖案5d、通孔導體2i連接而成之環形電感器所構成。另外，通孔導體2n連接於電容器導體圖案4b，通孔導體2i連接於接地導體圖案3。又，第2 LC共振器LC2之電容器C2由電容器導體圖案4b與接地導體圖案3之間之電容所構成。 The inductor L2 of the second LC resonator LC2 is composed of a loop inductor connected to the via-hole conductor 2n, the line-shaped conductor pattern 5d, and the via-hole conductor 2i. The via-hole conductor 2n is connected to the capacitor conductor pattern 4b, and the via-hole conductor 2i is connected to the ground conductor pattern 3. The capacitor C2 of the second LC resonator LC2 is composed of a capacitance between the capacitor conductor pattern 4b and the ground conductor pattern 3.
第3 LC共振器LC3之電感器L3由與通孔導體2o、線路狀導體圖案5e通孔導體2j連接而成之環形電感器所構成。另外，通孔導體2o連接於電容器導體圖案4c，通孔導體2j連接於接地導體圖案3。又，第3 LC共振器LC3之電容器C3由電容器導體圖案4c與接地導體圖案3之間之電容所構成。 The inductor L3 of the third LC resonator LC3 is composed of a ring inductor connected to the via-hole conductor 2o and the line-shaped conductor pattern 5e and the via-hole conductor 2j. The via-hole conductor 2o is connected to the capacitor conductor pattern 4c, and the via-hole conductor 2j is connected to the ground conductor pattern 3. The capacitor C3 of the third LC resonator LC3 is composed of a capacitance between the capacitor conductor pattern 4c and the ground conductor pattern 3.
第4 LC共振器LC4之電感器L4由與通孔導體2p、線路狀導體圖案5f、通孔導體2k連接而成之環形電感器所構成。另外，通孔導體2p連接於電容器導體圖案4d，通孔導體2k連接於接地導體圖案3。又，第4 LC共振器LC4之電容器C4由電容器導體圖案4d與接地導體圖案3之間之電容所構成。 The inductor L4 of the fourth LC resonator LC4 is composed of a loop inductor connected to the via-hole conductor 2p, the line-shaped conductor pattern 5f, and the via-hole conductor 2k. The via-hole conductor 2p is connected to the capacitor conductor pattern 4d, and the via-hole conductor 2k is connected to the ground conductor pattern 3. The capacitor C4 of the fourth LC resonator LC4 is composed of a capacitor between the capacitor conductor pattern 4d and the ground conductor pattern 3.
第5 LC共振器LC5之電感器L5包含由與通孔導體2q、線路狀導體圖案5g、通孔導體2l連接而成之環形電感器所構成。另外，通孔導體2q連接於電容器導體圖案4e，通孔導體2l連接於接地導體圖案3。又，第5 LC共振器LC5之 電容器C5由電容器導體圖案4e與接地導體圖案3之間之電容所構成。另外，電容器導體圖案4b如上所述，連接於輸入/輸出端子T2。 The inductor L5 of the fifth LC resonator LC5 includes a ring-shaped inductor connected to the via-hole conductor 2q, the line-shaped conductor pattern 5g, and the via-hole conductor 2l. The via-hole conductor 2q is connected to the capacitor conductor pattern 4e, and the via-hole conductor 2l is connected to the ground conductor pattern 3. The capacitor C5 of the fifth LC resonator LC5 is composed of a capacitance between the capacitor conductor pattern 4e and the ground conductor pattern 3. In addition, as described above, the capacitor conductor pattern 4b is connected to the input / output terminal T2.
又，第5 LC共振器LC5之磁耦合調整用電感器LX5由串聯連接之線路狀導體圖案5b與通孔導體2g所構成。另外，磁耦合調整用電感器LX5之線路狀導體圖案5b連接於通孔導體2l之中途點Y，通孔導體2g連接於接地導體圖案3。 The magnetic coupling adjustment inductor LX5 of the fifth LC resonator LC5 includes a line-shaped conductor pattern 5b and a via-hole conductor 2g connected in series. In addition, the line-shaped conductor pattern 5b of the magnetic coupling adjustment inductor LX5 is connected to the midpoint Y of the via-hole conductor 21, and the via-hole conductor 2g is connected to the ground conductor pattern 3.
第5 LC共振器LC5之磁耦合調整用電感器LX5之通孔導體2g係設於第4 LC共振器LC4之電感器L4之通孔導體2p附近。其結果，磁耦合調整用電感器LX5之線路狀導體圖案5b與第4 LC共振器LC4之電感器L4之線路狀導體圖案5f係彼此平行地配置。但是，線路狀導體圖案5b與線路狀導體圖案5f無須嚴格地平行配置，亦可以稍許傾斜之狀態而配置。並且，藉由調整線路狀導體圖案5b與線路狀導體圖案5f所成之角度，亦可調整兩者之磁耦合強度。 The through-hole conductor 2g of the magnetic coupling adjustment inductor LX5 of the fifth LC resonator LC5 is provided near the through-hole conductor 2p of the inductor L4 of the fourth LC resonator LC4. As a result, the line-shaped conductor pattern 5b of the magnetic coupling adjustment inductor LX5 and the line-shaped conductor pattern 5f of the inductor L4 of the fourth LC resonator LC4 are arranged in parallel with each other. However, the line-shaped conductor pattern 5b and the line-shaped conductor pattern 5f do not need to be arranged strictly in parallel, and may be arranged with a slight inclination. In addition, by adjusting the angle formed by the line-shaped conductor pattern 5b and the line-shaped conductor pattern 5f, the magnetic coupling strength of the two can also be adjusted.
又，電容器C12由形成於電容器導體圖案4f與電容器導體圖案4b之間之電容所構成。如上所述，電容器導體圖案4f連接於通孔導體2m。又，電容器導體圖案4b亦為第2 LC共振器LC2之電容器C2之電容器導體圖案。 The capacitor C12 includes a capacitor formed between the capacitor conductor pattern 4f and the capacitor conductor pattern 4b. As described above, the capacitor conductor pattern 4f is connected to the via-hole conductor 2m. The capacitor conductor pattern 4b is also a capacitor conductor pattern of the capacitor C2 of the second LC resonator LC2.
電容器C15由形成於電容器導體圖案4f與電容器導體圖案4h之間之電容、及形成於電容器導體圖案4i與電容器導體圖案4g之間之電容所構成。如上所述，電容器導體圖案4f連接於通孔導體2m，電容器導體圖案4h與電容器導體圖案4i彼此連接，電容器導體圖案4g連接於通孔導體2q。 The capacitor C15 includes a capacitor formed between the capacitor conductor pattern 4f and the capacitor conductor pattern 4h, and a capacitor formed between the capacitor conductor pattern 4i and the capacitor conductor pattern 4g. As described above, the capacitor conductor pattern 4f is connected to the via-hole conductor 2m, the capacitor conductor pattern 4h and the capacitor conductor pattern 4i are connected to each other, and the capacitor conductor pattern 4g is connected to the via-hole conductor 2q.
電容器C45由形成於電容器導體圖案4g與電容器導體圖案4d之間之電容所構成。如上所述，電容器導體圖案4g連接於通孔導體2q。又，電容器導體圖案4d亦為第4 LC共振器LC4之電容器C4之電容器導體圖案。 The capacitor C45 is composed of a capacitor formed between the capacitor conductor pattern 4g and the capacitor conductor pattern 4d. As described above, the capacitor conductor pattern 4g is connected to the via-hole conductor 2q. The capacitor conductor pattern 4d is also a capacitor conductor pattern of the capacitor C4 of the fourth LC resonator LC4.
藉由以上關係，積層型LC濾波器100由於積層體1之內部構成圖3所示之等效電路所構成。 Based on the above relationship, the multilayer LC filter 100 is configured by the internal structure of the multilayer body 1 as an equivalent circuit shown in FIG. 3.
積層型LC濾波器100中，構成第1至第5 LC共振器LC1至LC5之電 感器L1至L5之環形電感器之捲繞方向全部相同。即，於自形成有輸入/輸出端子T1之端面側朝向形成有輸入/輸出端子T2之端面側透視積層體1之情形時，與構成電感器L1之通孔導體2m、線路狀導體圖案5c、通孔導體2h連接之環形電感器、與構成電感器L2之通孔導體2n、線路狀導體圖案5d、通孔導體2i連接之環形電感器、與構成電感器L3之通孔導體2o、線路狀導體圖案5e、通孔導體2j連接之環形電感器、與構成電感器L4之通孔導體2p、線路狀導體圖案5f、通孔導體2k連接之環形電感器、與構成電感器L5之通孔導體2q、線路狀導體圖案5g、通孔導體2l連接之環形電感器全部朝同一方向捲繞。 In the multilayer LC filter 100, the winding directions of the loop inductors L1 to L5 of the first to fifth LC resonators LC1 to LC5 are all the same. That is, when the multilayer body 1 is seen through from the end surface side where the input / output terminal T1 is formed toward the end surface side where the input / output terminal T2 is formed, the through-hole conductor 2m constituting the inductor L1, the line-shaped conductor pattern 5c, The loop inductor connected to the via-hole conductor 2h, the via-hole conductor 2n constituting the inductor L2, the line-like conductor pattern 5d, the loop-shaped inductor connected to the via-hole conductor 2i, and the via-hole conductor 2o constituting the inductor L3, the line-like Conductor pattern 5e, loop inductor connected to via-hole conductor 2j, via-hole conductor 2p constituting inductor L4, line-shaped conductor pattern 5f, toroidal inductor connected to via-hole conductor 2k, and via-hole conductor constituting inductor L5 2q, the loop-shaped conductor pattern 5g, and the ring-shaped inductor connected to the through-hole conductor 2l are all wound in the same direction.
積層型LC濾波器100中，環形電感器之捲繞方向全部相同，因此第1至第5 LC共振器LC1至LC5之電感器L1至L5各自於鄰接者之彼此之間，以大的強度磁耦合。 In the multilayer LC filter 100, the winding directions of the toroidal inductors are all the same. Therefore, the inductors L1 to L5 of the first to fifth LC resonators LC1 to LC5 are each adjacent to each other and have a large magnetic strength. coupling.
例如，第1 LC共振器LC1之電感器L1之環形電感器、與第2 LC共振器LC2之電感器L2之環形電感器之捲繞方向相同，以大的強度磁耦合。然而，第1 LC共振器LC1具備磁耦合調整用電感器LX1，磁耦合調整用電感器LX1發揮功能，以將上述大強度之磁耦合減弱(減小)一定量。即，於磁耦合調整用電感器LX1中，電流係與第2 LC共振器LC2之電感器L2中流動之電流逆向地流動，磁耦合調整用電感器LX1發揮功能，以減弱(減小)綜合所見之、第1 LC共振器LC1之電感器(電感器L1及磁耦合調整用電感器LX1)與第2 LC共振器LC2之電感器(電感器L2)之磁耦合強度。 For example, the loop inductor of the inductor L1 of the first LC resonator LC1 and the loop inductor of the inductor L2 of the second LC resonator LC2 have the same winding direction, and are magnetically coupled with a large strength. However, the first LC resonator LC1 includes a magnetic coupling adjustment inductor LX1, and the magnetic coupling adjustment inductor LX1 functions to weaken (reduce) the large-intensity magnetic coupling by a certain amount. That is, in the magnetic coupling adjustment inductor LX1, the current flows in the reverse direction from the current flowing in the inductor L2 of the second LC resonator LC2, and the magnetic coupling adjustment inductor LX1 functions to weaken (reduce) the synthesis. The magnetic coupling strength between the inductor (inductor L1 and magnetic coupling adjustment inductor LX1) of the first LC resonator LC1 and the inductor (inductor L2) of the second LC resonator LC2 is seen.
同樣，第4 LC共振器LC4之電感器L4之環形電感器、與第5 LC共振器LC5之電感器L5之環形電感器之捲繞方向相同，以大的強度磁耦合。然而，第5 LC共振器LC5具備磁耦合調整用電感器LX5，磁耦合調整用電感器LX5發揮功能，以將上述大強度之磁耦合減弱(減小)一定量。即，於磁耦合調整用電感器LX5中，電流係與第4 LC共振器LC4之電感器L4中流動的電流逆向地流 動，磁耦合調整用電感器LX5發揮功能，以減弱(減小)綜合所見之、第4 LC共振器LC4之電感器(電感器L4)與第5 LC共振器LC5之電感器(電感器L5及磁耦合調整用電感器LX5)之磁耦合強度。 Similarly, the ring inductor of the inductor L4 of the fourth LC resonator LC4 and the ring inductor of the inductor L5 of the fifth LC resonator LC5 have the same winding direction, and are magnetically coupled with a large strength. However, the fifth LC resonator LC5 includes a magnetic coupling adjustment inductor LX5, and the magnetic coupling adjustment inductor LX5 functions to weaken (reduce) the aforementioned large-intensity magnetic coupling by a certain amount. That is, in the magnetic coupling adjustment inductor LX5, the current flows in the reverse direction from the current flowing through the inductor L4 of the fourth LC resonator LC4, and the magnetic coupling adjustment inductor LX5 functions to weaken (reduce) the synthesis. The magnetic coupling strength between the inductor (inductor L4) of the fourth LC resonator LC4 and the inductor (inductor L5 and magnetic coupling adjustment inductor LX5) of the fifth LC resonator LC5 is seen.
積層型LC濾波器100並非藉由調整電感器L1與電感器L2之間之距離、或電感器L4與電感器L5之間之距離，而是藉由設置磁耦合調整用電感器LX1、LX5，來調整鄰接之LC共振器之電感器間之磁耦合強度。因此，根據積層型LC濾波器100，可調整鄰接之LC共振器之電感器間之磁耦合以獲得所期望之頻率特性，而不會大型化。 The multilayer LC filter 100 is not provided by adjusting the distance between the inductor L1 and the inductor L2 or the distance between the inductor L4 and the inductor L5, but by setting the magnetic coupling adjustment inductors LX1 and LX5, To adjust the magnetic coupling strength between the inductors of adjacent LC resonators. Therefore, according to the multilayer LC filter 100, the magnetic coupling between the inductors of adjacent LC resonators can be adjusted to obtain a desired frequency characteristic without increasing the size.
圖4表示積層型LC濾波器100之頻率特性。又，為進行比較，表示有自積層型LC濾波器100中去除磁耦合調整用電感器LX1(線路狀導體圖案5a、通孔導體2f)及磁耦合調整用電感器LX5(線路狀導體圖案5b、通孔導體2g)所得的比較例之積層型LC濾波器之頻率特性。 FIG. 4 shows the frequency characteristics of the multilayer LC filter 100. For comparison, the self-laminated LC filter 100 is shown by removing the magnetic coupling adjustment inductor LX1 (line conductor pattern 5a, through-hole conductor 2f) and the magnetic coupling adjustment inductor LX5 (line conductor pattern 5b). Frequency characteristics of the multilayer LC filter of the comparative example obtained through the via conductor 2g).
由圖4可知，積層型LC濾波器100於通帶外側之低頻側及高頻側之兩者中，衰減量均大於比較例之積層型LC濾波器，具備優異之頻率特性。 As can be seen from FIG. 4, the multilayer LC filter 100 has an attenuation amount larger than that of the multilayer LC filter of the comparative example in both the low-frequency side and the high-frequency side outside the passband, and has excellent frequency characteristics.
[第2實施形態] [Second Embodiment]
圖5表示第2實施形態之積層型LC濾波器200。但是，圖5為積層型LC濾波器200之分解立體圖。 FIG. 5 shows a multilayer LC filter 200 according to the second embodiment. However, FIG. 5 is an exploded perspective view of the multilayer LC filter 200.
積層型LC濾波器200係對第1實施形態之積層型LC濾波器100之構成之一部分實施有變更。具體而言，於積層型LC濾波器100中，第1至第5 LC共振器LC1至LC5之電感器L1至L5之環形電感器之捲繞方向全部相同。與此相對，於積層型LC濾波器200中，將第2至第3 LC共振器LC2至LC3之電感器L3至L4之環形電感器之捲繞方向設為與積層型LC濾波器100相反。 The multilayer LC filter 200 is a part of the configuration of the multilayer LC filter 100 according to the first embodiment. Specifically, in the multilayer LC filter 100, the winding directions of the loop inductors of the inductors L1 to L5 of the first to fifth LC resonators LC1 to LC5 are all the same. In contrast, in the multilayer LC filter 200, the winding directions of the loop inductors of the inductors L3 to L4 of the second to third LC resonators LC2 to LC3 are set to be opposite to those of the multilayer LC filter 100.
更具體而言，於積層型LC濾波器100中，將構成電感器L2之通孔導體2n連接於電容器導體圖案4b，將通孔導體2i連接於接地導體圖案3，但於積 層型LC濾波器200中，對此實施變更，將與通孔導體2n形成於相同位置之通孔導體12n連接於接地導體圖案3，將與通孔導體2i形成於相同位置之通孔導體12i連接於電容器導體圖案4b。同樣，於積層型LC濾波器100中，將構成電感器L3之通孔導體2o連接於電容器導體圖案4c，將通孔導體2j連接於接地導體圖案3，但於積層型LC濾波器200中，對此實施變更，將與通孔導體2o形成於相同位置之通孔導體12o連接於接地導體圖案3，將與通孔導體2j形成於相同位置之通孔導體12i連接於電容器導體圖案4c。同樣，於積層型LC濾波器100中，將構成電感器L4之通孔導體2p連接於電容器導體圖案4d，將通孔導體2k連接於接地導體圖案3，但於積層型LC濾波器200中，對此實施變更，將與通孔導體2p形成於相同位置之通孔導體12p連接於接地導體圖案3，將與通孔導體2k形成於相同位置之通孔導體12k連接於電容器導體圖案4d。 More specifically, in the multilayer LC filter 100, the via-hole conductor 2n constituting the inductor L2 is connected to the capacitor conductor pattern 4b and the via-hole conductor 2i is connected to the ground conductor pattern 3, but in the multilayer LC filter In 200, a change is made to this. A via conductor 12n formed at the same position as the via conductor 2n is connected to the ground conductor pattern 3, and a via conductor 12i formed at the same position as the via conductor 2i is connected to the capacitor conductor pattern. 4b. Similarly, in the multilayer LC filter 100, the via hole conductor 2o constituting the inductor L3 is connected to the capacitor conductor pattern 4c and the via hole conductor 2j is connected to the ground conductor pattern 3, but in the multilayer LC filter 200, To this, a via conductor 12o formed at the same position as the via conductor 2o is connected to the ground conductor pattern 3, and a via conductor 12i formed at the same position as the via conductor 2j is connected to the capacitor conductor pattern 4c. Similarly, in the multilayer LC filter 100, the via-hole conductor 2p constituting the inductor L4 is connected to the capacitor conductor pattern 4d and the via-hole conductor 2k is connected to the ground conductor pattern 3, but in the multilayer LC filter 200, In this modification, a via-hole conductor 12p formed at the same position as the via-hole conductor 2p is connected to the ground conductor pattern 3, and a via-hole conductor 12k formed at the same position as the via-hole conductor 2k is connected to the capacitor conductor pattern 4d.
另外，於積層型LC濾波器200中，伴隨上述連接關係之變更，分別稍許變更電容器導體圖案4b、4c、4d之形狀。但是，為了便於理解，並未變更表示各自之符號。 In addition, in the multilayer LC filter 200, the shapes of the capacitor conductor patterns 4b, 4c, and 4d are slightly changed in accordance with the change in the connection relationship described above. However, for ease of understanding, the respective symbols are not changed.
於積層型LC濾波器200中，第1 LC共振器LC1之電感器L1之環形電感器、與第2 LC共振器LC2之電感器L2之環形電感器之捲繞方向相反，以小的強度磁耦合。然而，積層型LC濾波器200中，第1 LC共振器LC1具備磁耦合調整用電感器LX1，於磁耦合調整用電感器LX1中，電流以與第2 LC共振器LC2之電感器L2中流動之電流相同之方向流動。因此，磁耦合調整用電感器LX1發揮功能，以增強(增大)綜合所見之、第1 LC共振器LC1之電感器(電感器L1及磁耦合調整用電感器LX1)與第2 LC共振器LC2之電感器(電感器L2)之磁耦合強度。 In the multilayer LC filter 200, the winding direction of the ring inductor of the inductor L1 of the first LC resonator LC1 and the ring inductor of the inductor L2 of the second LC resonator LC2 are opposite to each other, and they are coupling. However, in the multilayer LC filter 200, the first LC resonator LC1 includes a magnetic coupling adjustment inductor LX1, and in the magnetic coupling adjustment inductor LX1, a current flows through the inductor L2 of the second LC resonator LC2. The current flows in the same direction. Therefore, the magnetic coupling adjustment inductor LX1 functions to enhance (enlarge) the inductors (the inductor L1 and the magnetic coupling adjustment inductor LX1) and the second LC resonator of the first LC resonator LC1, which are comprehensively seen. Magnetic coupling strength of LC2 inductor (inductor L2).
同樣，於積層型LC濾波器200中，第4 LC共振器LC4之電感器L4之環形電感器、與第5 LC共振器LC5之電感器L5之環形電感器之捲繞方向相反，以小的強度磁耦合。然而，積層型LC濾波器200中，第5 LC共振器LC5具備磁耦 合調整用電感器LX5，於磁耦合調整用電感器LX5中，電流以與第4 LC共振器LC4之電感器L4中流動之電流相同之方向流動。因此，磁耦合調整用電感器LX5發揮功能，以增強(增大)綜合所見之、第4 LC共振器LC4之電感器(電感器L4)與第5 LC共振器LC5之電感器(電感器L5及磁耦合調整用電感器LX5)之磁耦合強度。 Similarly, in the multilayer LC filter 200, the winding direction of the ring inductor of the inductor L4 of the fourth LC resonator LC4 and the ring inductor of the inductor L5 of the fifth LC resonator LC5 are opposite, and the winding direction is small. Strength magnetic coupling. However, in the multilayer LC filter 200, the fifth LC resonator LC5 includes a magnetic coupling adjustment inductor LX5, and in the magnetic coupling adjustment inductor LX5, a current flows through the inductor L4 of the fourth LC resonator LC4. The current flows in the same direction. Therefore, the magnetic coupling adjustment inductor LX5 functions to enhance (enlarge) the inductor (inductor L4) of the fourth LC resonator LC4 and the inductor (inductor L5 of the fifth LC resonator LC5), which are comprehensively seen. And the magnetic coupling strength of the magnetic coupling adjustment inductor LX5).
第2實施形態之積層型LC濾波器200亦與第1實施形態之積層型LC濾波器100同樣地，可調整鄰接之LC共振器之電感器間之磁耦合以獲得所期望之頻率特性，而不會使積層體1大型化。 The multilayer LC filter 200 of the second embodiment is similar to the multilayer LC filter 100 of the first embodiment in that the magnetic coupling between inductors of adjacent LC resonators can be adjusted to obtain a desired frequency characteristic, and The laminated body 1 is not enlarged.
以上，對第1實施形態之積層型LC濾波器100與第2實施形態之積層型LC濾波器200進行了說明。然而，本發明並不限定於上述內容，可依照發明之主旨實施各種變更。 The laminated LC filter 100 according to the first embodiment and the laminated LC filter 200 according to the second embodiment have been described above. However, the present invention is not limited to the above, and various changes can be made in accordance with the gist of the invention.
例如，於積層型LC濾波器100、200中，構成具備5個LC共振器之5級帶通濾波器，但濾波器之種類或級數為任意，並不限定於上述內容。 For example, in the multilayer LC filters 100 and 200, a five-stage band-pass filter including five LC resonators is configured, but the type or number of filters is arbitrary and is not limited to the above.
又，於積層型LC濾波器100、200中，均於第1 LC共振器LC1中設有磁耦合調整用電感器LX1，於第5 LC共振器LC5中設有磁耦合調整用電感器LX5。然而，所設之磁耦合調整用電感器之個數、或所設之對象LC共振器為任意，並不限定於上述內容。例如，亦可於鄰接之2個LC共振器之兩者中設置磁耦合調整用電感器。或者，亦可於積層體1之內部設置1個磁耦合調整用電感器，或者設置3個以上之磁耦合調整用電感器。 In the multilayer LC filters 100 and 200, a magnetic coupling adjustment inductor LX1 is provided in the first LC resonator LC1, and a magnetic coupling adjustment inductor LX5 is provided in the fifth LC resonator LC5. However, the number of the magnetic coupling adjustment inductors to be provided or the LC resonators to be installed is arbitrary, and is not limited to the above. For example, an inductor for magnetic coupling adjustment may be provided in both of the two adjacent LC resonators. Alternatively, one magnetic coupling adjustment inductor may be provided inside the multilayer body 1, or three or more magnetic coupling adjustment inductors may be provided.
又，於積層型LC濾波器100、200中，係將磁耦合調整用電感器LX1連接於第1 LC共振器LC1之環形電感器之通孔導體2h與接地導體圖案3之間，但連接磁耦合調整用電感器LX1之處並不限定於該部分，例如，亦可將磁耦合調整用電感器LX1連接於第1 LC共振器LC1之環形電感器之通孔導體2m與接地導體圖案3之間、或者第1 LC共振器LC1之線路狀導體圖案5c與接地導體圖案3 之間。同樣，於積層型LC濾波器100、200中，係將磁耦合調整用電感器LX5連接於第5 LC共振器LC5之環形電感器之通孔導體2l與接地導體圖案3之間，但連接磁耦合調整用電感器LX5之處並不限定於該部分，例如，亦可將磁耦合調整用電感器LX5連接於第5 LC共振器LC5之環形電感器之通孔導體2q與接地導體圖案3之間、或者第5 LC共振器LC5之線路狀導體圖案5g與接地導體圖案3之間。 In the multilayer LC filters 100 and 200, the magnetic coupling adjustment inductor LX1 is connected between the through-hole conductor 2h of the ring inductor of the first LC resonator LC1 and the ground conductor pattern 3, but the magnetic connection The coupling adjustment inductor LX1 is not limited to this part. For example, the magnetic coupling adjustment inductor LX1 may be connected to the through-hole conductor 2m of the ring inductor of the first LC resonator LC1 and the ground conductor pattern 3. Between the line-shaped conductor pattern 5c of the first LC resonator LC1 and the ground conductor pattern 3. Similarly, in the multilayer LC filters 100 and 200, the magnetic coupling adjustment inductor LX5 is connected between the through-hole conductor 21 of the loop inductor of the fifth LC resonator LC5 and the ground conductor pattern 3, but the magnetic connection The coupling adjustment inductor LX5 is not limited to this part. For example, the magnetic coupling adjustment inductor LX5 may be connected to the via conductor 2q of the ring inductor of the fifth LC resonator LC5 and the ground conductor pattern 3. Between the line-shaped conductor pattern 5g of the fifth LC resonator LC5 and the ground conductor pattern 3.
又，於積層型LC濾波器100、200中，積層體1由15層陶瓷之介電質層1a至1o所構成，但介電質層之材質或層數為任意，並不限定於上述內容。例如，亦可使介電質層1a至1o由樹脂形成。 In the multilayer LC filters 100 and 200, the multilayer body 1 is composed of 15 ceramic dielectric layers 1a to 1o. However, the material or number of the dielectric layers is arbitrary and is not limited to the above. . For example, the dielectric layers 1a to 1o may be formed of a resin.
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| CN102647165B (en) * | 2006-04-14 | 2015-04-01 | 株式会社村田制作所 | Layered band pass filter |
| JP5387542B2 (en) * | 2010-11-09 | 2014-01-15 | 株式会社村田製作所 | Multilayer LC filter |
| JP5598548B2 (en) | 2010-11-16 | 2014-10-01 | 株式会社村田製作所 | Multilayer bandpass filter |
| JP5821914B2 (en) * | 2013-08-28 | 2015-11-24 | 株式会社村田製作所 | High frequency components |
| US9123950B2 (en) * | 2013-09-26 | 2015-09-01 | Lg Chem, Ltd. | Battery module and battery cell |
| KR20150138977A (en) * | 2014-05-30 | 2015-12-11 | 한국전자통신연구원 | Light emitting device and method for fabrication the same |
| CN107005213B (en) * | 2014-12-10 | 2020-07-21 | 株式会社村田制作所 | Electronic component |
| JP6428918B2 (en) * | 2015-03-23 | 2018-11-28 | 株式会社村田製作所 | Bandpass filter and multilayer bandpass filter |
-
2017
- 2017-08-29 TW TW106129335A patent/TWI643454B/en active
- 2017-09-14 JP JP2018543816A patent/JP6773122B2/en active Active
- 2017-09-14 CN CN201780061512.0A patent/CN109845100B/en active Active
- 2017-09-14 WO PCT/JP2017/033356 patent/WO2018066339A1/en active Application Filing
-
2019
- 2019-03-29 US US16/368,908 patent/US10771035B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6424236B1 (en) * | 1999-05-07 | 2002-07-23 | Murata Manufacturing Co., Ltd. | Stacked LC filter with a pole-adjusting electrode facing resonator coupling patterns |
| TW201128942A (en) * | 2009-09-18 | 2011-08-16 | Murata Manufacturing Co | Filter |
| TW201330494A (en) * | 2011-11-09 | 2013-07-16 | Murata Manufacturing Co | Stacked lc filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109845100B (en) | 2022-11-08 |
| US20190229698A1 (en) | 2019-07-25 |
| WO2018066339A1 (en) | 2018-04-12 |
| CN109845100A (en) | 2019-06-04 |
| US10771035B2 (en) | 2020-09-08 |
| TW201826701A (en) | 2018-07-16 |
| JPWO2018066339A1 (en) | 2019-07-25 |
| JP6773122B2 (en) | 2020-10-21 |
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